diff -Nru ghc-9.0.2/debian/changelog ghc-9.0.2/debian/changelog
--- ghc-9.0.2/debian/changelog	2022-09-24 07:06:11.000000000 +0000
+++ ghc-9.0.2/debian/changelog	2022-10-01 14:07:03.000000000 +0000
@@ -1,3 +1,12 @@
+ghc (9.0.2-4+rpi1) bookworm-staging; urgency=medium
+
+  [changes brought forward from 7.6.3-21+rpi1 by Peter Michael Green <plugwash@raspbian.org> at Sun, 19 Apr 2015 14:00:16 +0000]
+  * Change compiler defaults for armv6
+  [changed introduced in 7.10.3-2+rpi1 by Peter Michael Green]
+  * Add call to dh_autoreconf_clean
+
+ -- Peter Michael Green <plugwash@raspbian.org>  Sat, 01 Oct 2022 14:07:03 +0000
+
 ghc (9.0.2-4) unstable; urgency=medium
 
   * Backport patch to fix ABI reproducibility (Closes: #1015733)
diff -Nru ghc-9.0.2/debian/patches/ARM-VFPv3D16 ghc-9.0.2/debian/patches/ARM-VFPv3D16
--- ghc-9.0.2/debian/patches/ARM-VFPv3D16	2022-09-03 12:32:28.000000000 +0000
+++ ghc-9.0.2/debian/patches/ARM-VFPv3D16	2022-10-01 14:07:03.000000000 +0000
@@ -13,9 +13,10 @@
 @@ -475,7 +475,7 @@ AC_DEFUN([GET_ARM_ISA],
                  )],
                  [changequote(, )dnl
-                  ARM_ISA=ARMv7
+-                 ARM_ISA=ARMv7
++                 ARM_ISA=ARMv6
 -                 ARM_ISA_EXT="[VFPv3,NEON]"
-+                 ARM_ISA_EXT="[VFPv3D16,NEON]"
++                 ARM_ISA_EXT="[VFPv2]"
                   changequote([, ])dnl
                  ])
          ])
diff -Nru ghc-9.0.2/debian/rules ghc-9.0.2/debian/rules
--- ghc-9.0.2/debian/rules	2022-09-24 06:54:56.000000000 +0000
+++ ghc-9.0.2/debian/rules	2022-10-01 14:07:03.000000000 +0000
@@ -314,6 +314,8 @@
 	rm -f utils/ghc-pwd/dist-boot/Main.o
 	rm -f utils/ghc-pwd/dist-boot/ghc-pwd
 
+	dh_autoreconf_clean
+
 	rm -f libraries/haskeline/a.out
 	rm -rf utils/ghctags/dist-install